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Nadere

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  1. Nadere

    Time In System

    Thanks a lot. It is very helpful
  2. Nadere

    Time In System

    Thank you so much for your help. I already did this one. In the attached model, I did everything that you did in your model by myself. Again, I have problem with state variable "StaNumberEntered".The only thing is different with your model is that I consider network instead of free space because I want similar to my network. Thanks again, Nadere cutoff.spfx
  3. Nadere

    Time In System

    Thank you so much for your help. Finally, I can understand your model but I have one more question. I define the state variable (StaNumberEntered) in Mysink but it is not appeared in Table. Could you please help why this state variable is not recognized by my table? Thanks, Nadere
  4. Nadere

    Time In System

    Thank you so much for your help. In your sample, entities choose the sink based on the sink's capacity. Which one has the lowest capacity entity is sent to that sink. In my problem, I put counter on each sink. All entities are sent to that sink until the desired value is obtained for that sink then entities go to the second sink, so on so forth. Could you please help about this problem? Thanks, Nadere
  5. Hello, I have a network that it has several sources and sinks. I set the following properties for each path: 1) Initial Traveler Capacity: 770000 2) Drown to scale: False 3) Logical Length: 150 Miles 4) Allow Passing: False 5) Speed Limit: 90 Miles per Hour. By putting these properties on the link, congestion is occurred in the system. When I run the model that entities randomly choose path and sink, TimeInSystem get different values for minimum, maximum and average in result part. However, when I put sequence for all paths and source, TimeInSystem get the same values for minimum, maximum and average in result part while we have congestion in the network. Can you tell me why the TimeInSystem does not change? Thanks, Nadere
  6. Nadere

    Time In System

    I am using transfer step for the entities to the sink but there are different links and path between the source and sink. So, if I use transfer step in add on process, the entity transfer from source to sink directly. Then, the time in system cannot be computed. I want to determine the destination (sink) by using add on process after checking some criteria. Could you please help me about this problem? My goal is to choose the sink after checking some criteria and then send entities from source to that destination(sink) by using some path randomly. Thanks, Nadere
  7. Nadere

    Time In System

    When I put delay step ( 5 minutes), TimeInSystem get the value (0.083 hour) in the result part. What does it mean?Does it mean that the add on process is not correct?
  8. Hello, I have a network with one source and different sinks. I use add on process on the output of my source to choose the sinks based in the capacity. When I run the model, all created entities destroyed in the sinks correctly but in result part, "TimeInSystem" is equal zero. Due to add on process, is it happen?Should I calculate time in system with Tally? Best, Nadere
  9. Hello, I have a network with 2 sources and 2 sinks, and each source has its own entity. I want that each entity randomly choose the destination (sink) before entering to the network. Since I do not know the answer of this question, I create a Node List for each source and add to output of source but my model does not run correctly. The model only creates entity, and they cannot reach the destination. I was wondering if you could help me. The model is attached. Thanks, Nadere choose_sink.spfx
  10. Thank you so much for your help. I have one more question. Since Path3.DesiredSpeed is equal to 5 m/s. why is the value of the Status Label greater than 5 m/s? Thanks, Nadere EntitySpeed4_me (1).spfx
  11. Hello All, In the attached file, you could accelerate the speed of entities in the free space. I want to do the same thing in the network. Is there any way to accelerate the speed of entities on the path? If yes, could you please help me how I can do it? For example, in the attached file, is there any way to accelerate the speed of entities on path 5 and 3 (After passing point A)? I was wondering if you could let me know how I can do it.  Thanks, Nadere EntitySpeed4.spfx
  12. Hello GFurtado, Thank you very much for helping me. I have one more question related to the acceleration. As far as I know, we can accelerate the speed of entity in free space. I want to modify the previous file by adding another path after checkpoint2. Therefore, the congestion will be decreasing on path5 and path3. Is there any way to accelerate the speed of entities on path 5 and 3? If yes, could you please help me how I can do it? Thanks, Nadere EntitySpeed3.spfx
  13. Hello GFurtado, Thank you so much for replying my questions very comprehensive. In your model, you assume that the value of DesiredSpeed is equal to "random.exponential(1)+1", and then you calculated the movement.rate. I change the following parameters in the attached file, and I have one more question about the "Movement.Rate". 1) Instead of considering "exponential(1)+1" for ModelEntity.DesiredSpeed on State Assignment, I consider the constant value 3 m/s. 2) Also, I add one more source to the model to create congestion on the model (Source 2 has a similar property with Source 1) . When I run the model, "RadarDetectedSpeed" shows the constant number "10800", however, we have congestion. Does it mean that the speed of entities are fixed even we have congestion on the road? I expect that the Movement.Rate shows a larger number on "RadarDetectedSpeed" because speed = (difference distance/difference time), since we have 1) congestion on the road, it takes more time to stay on the road 2) fixed speed, the difference distance should be larger. Thanks, Nadere EntitySpeed1.spfx
  14. Hello, I have a couple of questions regarding the entity speed: 1) As a default, the initial desired speed for ModelEntity is equal to 1.4 m/s. What does it mean? does it mean that all entities have this speed before they move (When they are created)? Is it possible the speed of entity accelerates or decelerates when it enters to the link? If yes, does the entity keep the speed during the path? Also, How does the speed of an entity detect to change when an entity enters a path? Is it random (or follows distribution)? Or based on the distance with the front entity, the speed of entity change? 2) How can I calculate the speed of an entity at each unit of time? (Like Police radar detection) Thanks, Nadere
  15. I have licensed of Simio. Snap to Grid does not work too.
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